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The ultimate source of energy that drives wind power is __________. |
The sun |
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A typical wind farm in the United States consists of __________. |
many very large wind turbines clustered in a region with a low human population |
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The year 2030 goal set by the US Department of Energy is to generate __________. |
20% of electricity using wind-powered systems |
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Electricity in a wind turbine is generated __________. |
when spinning magnets move past a coil of copper wire |
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Producing electricity using wind instead of fossil fuels __________. |
generates no carbon dioxide in the process |
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The United States generates more electricity from ________ than from any other renewable energy source. |
hydropower |
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What is an example of an energy source that is renewable and has less environmental impact than fossil fuels? |
bioenergy |
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Recently, how has Germany reduced its dependence on fossil fuels? |
by utilizing the feed-in tariff system |
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Why is renewable energy use growing? |
There is increasing concern over the environmental impacts of fossil fuel combustion. |
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How is the sun’s energy production different from the process in which energy is produced in current nuclear power plants? |
The sun releases energy through nuclear fusion, whereas our current nuclear power technology releases energy through nuclear fission. |
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Passive solar energy collection includes which of the following technologies? |
buildings designed and building materials chosen to maximize their direct absorption of sunlight |
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What is the reason that solar power provides for so little of our energy needs? |
The upfront cost of installation can be very steep. |
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Wind turbines convert the wind’s __________ energy into electricity. |
Kinetic |
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Which of these statements is not true of wind power? |
Wind turbines take up large amounts of land that is then unsuitable for other purposes |
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How is wind energy related to solar energy? |
Wind energy is the result of the sun’s producing wind. |
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What sort of threat does wind energy pose to certain kinds of wildlife? |
Flying creatures such as birds and bats are killed when they fly into wind turbine blades. |
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What is the greatest limitation for the use of geothermal power? |
It is restricted to regions where we can tap energy from naturally heated groundwater. |
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What happens to unused electricity generated by solar panels on a home? The extra electricity is __________. |
sent back into the electrical grid for others to use |
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Where would you most likely find a solar thermal power plant in the United States? |
in the southwestern states |
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The major problem impeding the widespread use of solar panels on residential buildings is the __________. |
cost of solar panels |
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Massive solar thermal power plants generate electricity by __________. |
using sunlight to boil water, generate steam, and turn the blades of a turbine |
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What sort of process converts the mechanized energy in the ocean into electricity? |
wave energy |
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What is the process behind tidal energy? |
the difference between high and low tides |
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Hydroelectric power accounts for approximately how much of the world’s electricity production? |
one-sixth |
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Why is there little to no growth expected for hydropower? |
Almost all rivers that can be dammed for power generation have been dammed already. |
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What is the ultimate energy source for biomass (also known as biomass energy)? |
sunlight through the process of photosynthesis, in which the chemical potential energy of biomass originates |
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How is cellulosic ethanol different from traditional corn-based ethanol? |
It can be made from the nonfood portions of plants and from wood. |
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While hydrogen energy holds promise, the fact is that hydrogen is an energy __________, not a primary energy __________. |
carrier, source |
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What is the basis for the use of hydrogen fuel cells? |
It is extremely energy-efficient. |
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What is electrolysis? |
the splitting of water into component hydrogen and oxygen |
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What two waste products are produced by hydrogen fuel cells? |
water and heat |
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Which of the following is an advantage of using visible light in this process as compared to UV light? |
Visible light makes up the majority of the sun’s rays. |
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The N-alkyl-aminoterephthalates are most comparable to which of the following in plants? |
chloroplasts |
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You are the CEO of a company that creates solar panels using this technology. Which of the following is the solar fuel that is produced? |
Formate and foramides |
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If this technology progresses in its current form, which of the following metals will be necessary for the metal-organic framework? |
Titanium |
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Which of the following would need to be altered in order to change this technology to make use of different wavelengths of light? |
photoreactor |
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Which of the following energy sources do not generate substantial greenhouse gas emissions when used to generate electricity? |
solar, wind, and nuclear |
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